/**
 * Copyright 2021 Shulie Technology, Co.Ltd
 * Email: shulie@shulie.io
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.shulie.instrument.simulator.core.util;

import java.util.Enumeration;
import java.util.NoSuchElementException;

/**
 * @author xiaobin.zfb|xiaobin@shulie.io
 * @since 2020/9/24 5:32 下午
 */
public class EmptyEnumeration<E> implements Enumeration<E> {
    private static final EmptyEnumeration<Object> EMPTY_ENUMERATION
            = new EmptyEnumeration<Object>();

    @Override
    public boolean hasMoreElements() {
        return false;
    }

    public static <T> EmptyEnumeration<T> emptyEnumeration() {
        return (EmptyEnumeration<T>) EMPTY_ENUMERATION;
    }

    @Override
    public E nextElement() {
        throw new NoSuchElementException();
    }
}
